[Chronic bronchitis. A controlled study on the effect of continuous oxygen administration in cases of hypoxia].
D000368:Aged; D001991:Bronchitis / Q000628:therapy*; D002986:Clinical Trials as Topic; D006801:Humans; D000860:Hypoxia / Q000628:therapy; D008875:Middle Aged; D010102:Oxygen Inhalation Therapy; D012129:Respiratory Function Tests